The foregoing data enlighten us as to the practical value of a sternly enforced system of division and differentiation for the control of the population, and of clay images of persons for statistical purposes. We have seen that, during many centuries, the energy of the rulers was directed towards making groups of people as distinct and different from each other as possible. They were rigidly kept apart and, in all assemblages, they occupied separate positions, in a fixed order of relation to each other. “All the people of Cuzco came out according to their tribes and lineages ... and assembling in the great square ... sat down on their benches, each man according to the rank he held, the Hanan-Cuzco on one side and the Hurin-Cuzco on the other” (Molina ed. Hakluyt, p. 26). Beside this dual division of the entire population, under the separate rulerships of the Inca and Coya, who were linked together, however, in a sacred and indissoluble union and respectively represented Heaven and Earth, let us study the executive administration of the religious and civil governments. Two sets, each consisting of four rulers, next in rank to the Inca and Coya, are described: Each quarter or Suyu was ruled over by a “viceroy,” or “Inca governor,” entitled tucuyricoc=“he who sees all,” or Capac. In the days of the Inca Huayna Capac the names of the four “viceroys” are recorded as having been Capac=Achachic, Capac=Larico, Capac=Yochi, Capac=Hualcaya. These were obviously members of the Inca family and next in rank to the Inca, who presided as supreme pontiff over the religious government. The civil and tribal administration was executed by four Curacas, each of which had charge of 10,000 persons belonging to the ayllus=tribes or lineages. The titles of these four Curacas are recorded as: Hunu-Camayu or Camayoc, Huaronca-Camayu or Camayoc, Pachaca-Camayu or Camayoc, Chunca-Camayu or Camayoc. As their titles show, they were the chief accountants or recorders of statistics, which were recorded by means of the quippus. Under them, in regular order there were officers, who respectively had charge of 500, 100, 50 or 10 individuals. In the latter instance it is expressly stated that it was always one man out of the ten who governed and rendered account of the remaining nine. The four chief recorders dwelt in Cuzco but “left it every year and returned in February to make their report ... bringing with them the tribute of the whole empire. They also reported upon the administration every year recording the births and deaths that had occurred among men and flocks, the yield of crops and all other details, with great minuteness” (Polo de Ondegardo).